High Fidelity Teleportation of Continuous Variable Quantum States using Delocalized Single Photons

TL;DR

This paper introduces a novel continuous variable teleportation method using delocalized single photons, achieving near-perfect fidelity with finite resources, unlike traditional approaches requiring unphysical squeezing levels.

Contribution

It presents a new teleportation protocol based on single photon entangled states, enabling high-fidelity teleportation with practical resource constraints.

Findings

Achieves near-unity fidelity with modest resources

Validates protocol with coherent, cat, and squeezed states

Provides a practical alternative to traditional squeezing-based teleportation

Abstract

Traditional continuous variable teleportation can only approach unit fidelity in the limit of an infinite (and unphysical) amount of squeezing. We describe a new method for continuous variable teleportation that approaches unit fidelity with finite resources. The protocol is not based on squeezed states as in traditional teleportation but on an ensemble of single photon entangled states. We characterize the teleportation scheme with coherent states, Schrodinger cat states and two-mode squeezed state and we find several situations in which near-unity teleportation fidelity can be obtained with modest resources.